John (Eljay) Love-Jensen wrote:
Hi Yang,
In Java, you can insert @SuppressWarnings(...) annotations before a line
to tell javac to suppress certain warnings for that line. Is there
anything similar for gcc?
Anyone?
For gcc, there are the compile line switches, such as -Wall, -Wextra, and
other -Wsomething which enable (or using -Wno-something, disable) the
warning.
Yeah, I know about these - they only apply to the entire source file,
whereas I'm interested in disabling warnings for particular lines.
There are no #pragma directives to disable warnings in-line with the code.
I sense an itch here - write a grep-like tool that can filter out
warnings from gcc based on the presence of certain tokens in your source
file. For instance, inserting
// SuppressWarning(conversion)
into your source should cause the tool to filter out -Wconversion
warnings for the following line.
Have to think/experiment more about how to deal with multi-line
statements, though - not sure how gcc numbers lines in its warnings.
Also, this still won't work with -Werror (which is something I use), as
gcc itself will refuse to continue with the compilation.
--
Yang Zhang
http://www.mit.edu/~y_z/
